Anthrax kicked off the 2013 Revolver Golden Gods last night (May 2) with a set that included blistering performances of 'Caught in a Mosh' and 'Fight 'Em Till You Can't,' before the band welcomed the night's first surprise guests -- Pantera's Phil Anselmo and Rex Brown -- for a performance of Pantera's 'This Love.' A partial performance of Slayer's 'Raining Blood' in honor the late guitarist Jeff Hanneman, who passed away earlier in the day, was met with a standing ovation. Watch the entire performance above.